i got my v2 today, and it is dead

[Pdelcast]

Originally Posted by mk351e

i didn't plug and unplug a lot. BUT, every time i did, i had the appropriate resistor in series to charge the caps slowly - I soldered one up with deans on both ends for a nice finish! I used to install car stereos, so I know to charge caps! ;)

Dude -- TAKE OUT THE RESISTOR. I just can't stress that enough... TAKE OUT THE RESISTOR. This isn't a car stereo, it's a motor control. When the beep happens (power-up beep) with a resistor in series with the power supply BAD THINGS HAPPEN.

If a resistor was important, (or even desirable) we would either include it, or recommend it.

Give me a call on Monday (ask for me specifically -- I get into work at about 10am on Mondays.) Tell Christy that I asked you on this forum to call for me specifically. I'll make sure we get a MMM out to you. Just take out the resistor -- OK?

And don't all you people call me on Monday.

[kulangflow]

Originally Posted by mk351e

I am not new to spektrum - I've been using this remote for a couple of years. all settings were set to zero on the remote, except throttle endpoint, which was at 115%. the mystery pop happened during calibration - batts were plugged in and switch on.

Why do you have the throttle endpoint at 115%?

The only way my Spektrum radios calibrate properly with any of my CC ESCs is if the throttle endpoint is at 100%.

I don't know if that could be related to the failure, but it could explain your calibration issue.

Good luck tomorrow with your call. I hope you're able to figure it out and get up and running quickly.

[TruckBasher]

Originally Posted by Pdelcast

And don't all you people call me on Monday.

Haha you should have said this via thread expect calls later on

OT:
Patrick in your opinion if I buy directly from CC today do you think your shipping guys can process it this week? I plan to cancel my BO from Tower and get it from you directly

Thanks and sorry for the hijack

[Pdelcast]

Originally Posted by TruckBasher

Haha you should have said this via thread expect calls later on

In your opinion if I buy directly from CC today do you think your shipping guys can process it this week? I plan to cancel my BO from Tower and get it from you directly

Thanks

Well, probably not. I don't think that all 2000 will be complete by the end of this week (although it will be close.) But if you place the order on Monday, you go TO THE BOTTOM OF THE LIST. Seriously, we ship orders out in the order we receive them. That's how our software works. Same for repairs, they get shipped out in the order that they are entered into the computer.

So, you will probably add some time to your wait by canceling the order with Tower and replacing it with an order from us...

[TruckBasher]

Thanks anyway...

Hope you can isolate the V2 failures...

[MTBikerTim]

If the resistor is in line only when the esc is switched off is that going to do damage? So you remove the resistor replug the batteries in and then switch the esc on. I haven't tried this but was thinking about it but I won't now. I can see why it would cause problems if the esc was initialising with the resistor in the way (now that i think about it) but not sure why it would with the esc turned off. I don't know how the MMM works and what the switch is switching so I have no clue really.

[Pdelcast]

Originally Posted by MTBikerTim

If the resistor is in line only when the esc is switched off is that going to do damage? So you remove the resistor replug the batteries in and then switch the esc on. I haven't tried this but was thinking about it but I won't now. I can see why it would cause problems if the esc was initialising with the resistor in the way (now that i think about it) but not sure why it would with the esc turned off. I don't know how the MMM works and what the switch is switching so I have no clue really.

If the resistor is inline ONLY when the ESC is switched off, then no, it won't cause a problem.

It will cause some huge voltage spikes (and possibly damage the ESC) if the resistor is inline during initialization...

BUT, to be safe, just don't do it. Just say no to the inline resistor.

[MTBikerTim]

Originally Posted by Pdelcast

If the resistor is inline ONLY when the ESC is switched off, then no, it won't cause a problem.

It will cause some huge voltage spikes (and possibly damage the ESC) if the resistor is inline during initialization...

BUT, to be safe, just don't do it. Just say no to the inline resistor.

Risk of accidentally having the esc on when plugging the battery in would be too high. I was just curious. I noticed too that when I plugged my MMMv1 in for the first time ever there were huge sparks which made me jump but after that, even the next day there were none so I'm not too worried. They must discharge eventually but sparks aren't going to be a problem most of the time anyway.

Thanks for the reply too.

[Sammus]

So just to confirm, this is a bad idea?

I've ruined a few deans with sparking on HV setups, with bullets you can do one at a time and be quick though, I can usually get it without a spark.. I was thinking of following Biran's calcs for a no spark resistor though...

[Pdelcast]

Originally Posted by Sammus

So just to confirm, this is a bad idea?

I've ruined a few deans with sparking on HV setups, with bullets you can do one at a time and be quick though, I can usually get it without a spark.. I was thinking of following Biran's calcs for a no spark resistor though...

Yeah, that's a bad idea. We don't recommend it.

The calculator also is WAY off for charge times -- you don't EVER need to charge a capacitor that slowly. A .1 ohm resistor (yes 1/10 ohm) is enough to keep the spark from happening.

The only thing that suffers from the spark is the connectors.

[tc3_racer_001]

and your nerves

can you tell us how many have been sent out and approx. when us international customers can expect to see them in Mikes hands? thanks for the updates!

Originally Posted by Pdelcast

Yeah, that's a bad idea. We don't recommend it.

The calculator also is WAY off for charge times -- you don't EVER need to charge a capacitor that slowly. A .1 ohm resistor (yes 1/10 ohm) is enough to keep the spark from happening.

The only thing that suffers from the spark is the connectors.

And they are cheap enough and simple enouigh to replace when they wear down.

[bl-is-future]

See i am not up on electronics and how they work but when i heard about a resistor i though why use one of those if castle don't recommend it?
I am running a V1 with no problems to this day.

[sleebus.jones]

Originally Posted by Pdelcast

The only thing that suffers from the spark is the connectors.

Yeah, and with a resistor, you're missing out on the big manly spark that happens when you plug in a fully charged 6S pack! ARrr r rr arrr arrrrrrrr.

[GT35R]

Yeah sparks are normally bad, but these sparks mean hi powa goodness is about to be unleashed that will rock your world. And don't forget 'chicks dig sparks'

Ahh, bed time.